1N4757A-TR

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	51V
Tolerance:	±5%
Power - Max:	1.3W
Impedance (Max) (Zzt):	95 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 38.8V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	175°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-41
Base Part Number:	1N4757

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1N4757A-TR is a single Zener diode commonly used for circuit protection, signal clamping, and voltage regulation. It has an operating temperature range from -65 to 150 degrees Celsius. It is manufactured from a silicon-based semiconductor material, which is why it is so reliable and durable. The 1N4757A-TR is ideal for a variety of applications due its low noise level, low capacitance and fast response time.The 1N4757A-TR is classified as a Zener diode which works by allowing an electric current to flow in one direction but blocks it in the opposite direction. When forward biased, the diode allows current to flow in a forward direction. This is known as the forward-bias or forward-breakover voltage. When reverse-biased, it blocks current and the voltage applied must exceed a certain level before the current will begin to flow in a reverse direction. This is known as the reverse-bias or reverse-breakover voltage.The purpose of the 1N4757A-TR is to protect circuit components from voltage transients, or surges, caused by current and voltage fluctuations. The diode works by essentially clamped these transients at a certain voltage level which is lower than the actual value. This can prevent components from damage since it limits the voltage to a safe level.The 1N4757A-TR diode can also be used for signal clamping, meaning that it can be used to limit the amplitude of a signal to a certain level by preventing it from changing too quickly. This is incompatible with other signal compression techniques that can cause distortion. Signal clamping with the 1N4757A-TR is often used in audio to eliminate pops and clicking noises that are otherwise present when amplifying a signal.The 1N4757A-TR can also be used for voltage regulation. By placing the diode between a power supply and the device being powered, it acts as a regulator that ensures the voltage delivered is not greater than the expected maximum. This can help ensure the safe operation of sensitive components by preventing the voltage from fluctuating.In conclusion, the 1N4757A-TR is an invaluable device for a variety of applications and is most commonly used as a voltage regulator, signal clamp and circuit protection. Its robust design and versatile features make it a popular choice for many circuit applications.

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